Examlex
Which type of movement lowers a part of the body?
Planaria
A genus of flatworms, which are often used in scientific studies due to their remarkable regenerative abilities.
Deuterostomes
A classification of animals that includes humans, characterized by the development of the anus from the first opening in the embryo.
Embryonic Development
In humans, the first 2 months of development following fertilization, during which the major organs are formed.
Radial Cleavage
A type of embryonic development in certain animals where cell divisions occur at right angles to one another, typical in deuterostomes.
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